ELECTRET AND METHOD FOR MANUFACTURING SAME, AND ELECTROSTATIC INDUCTION TYPE CONVERSION ELEMENT

WIPO Patent Application WO/2013/015385

A1

There are obtained an electret that produces a high charge density and that has good charge density stability under a high temperature and humidity, and an electrostatic induction type conversion element provided with the electret. An electret in which a charge is introduced in a layered body having a resin layer (A) and a resin layer (B) layered directly with the resin layer (A), the electret characterized in that: the resin layer (A) contains a product of a reaction between a fluorine-containing polymer and a silane coupling agent; the resin layer (B) does not include the product of a reaction between a fluorine-containing polymer and a silane coupling agent, and contains a fluorine-containing polymer; the resin layer (B) is arranged as the outermost layer so as to be in contact with air; and the total thickness of the resin layer (B) is 5-55% of the total thickness of the resin layer (A). An electrostatic induction type conversion element provided with the electret.

NAKAYAMA FUMIKO (JP)
KASHIWAGI KIMIAKI (JP)

PCT/JP2012/069036

January 31, 2013

July 26, 2012

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ASAHI GLASS CO LTD (JP)
NAKAYAMA FUMIKO (JP)
KASHIWAGI KIMIAKI (JP)

H01G7/02; B32B7/02; B32B27/30

WO2010095554A1	2010-08-26
WO2010044421A1	2010-04-22
WO2010044425A1	2010-04-22

JP2011133634A	2011-07-07
JP2008266563A	2008-11-06
JP2006180450A	2006-07-06

G.M. SESSLER: "Electrets Third Edition,", 1998, LAPLACIAN PRESS, article "Charging and Polarizing Methods", pages: 20
See also references of EP 2738781A4

SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)

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